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Note 2 - Revenues (Tables)
3 Months Ended
Mar. 31, 2017
Notes Tables  
Revenue from External Customers by Products and Services [Table Text Block]
   
Three Months Ended
March 31
,
 
   
201
7
   
201
6
 
Residential
               
Data
  $
90,201
    $
83,439
 
Video
   
72,454
     
74,853
 
Voice
   
9,867
     
11,314
 
Business services
   
26,961
     
23,827
 
Advertising sales
   
5,622
     
7,003
 
Other
   
2,322
     
2,369
 
Total revenues
  $
207,427
    $
202,805